Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 58 users online :: 4 registered, 1 hidden and 53 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

breech, multi shot air tank, + more on any cannon. pics+vid

A place to ask general spud cannon related questions.
Sponsored 
  • Author
    Message

breech, multi shot air tank, + more on any cannon. pics+vid

Unread postAuthor: jhalek90 » Sat Sep 19, 2009 3:48 pm

Today i built an interchangeable system to attach to any of my air cannons.
The system includes, a simple breech, multi-shot air tank, and interchangeable barrels .

The breech is made from 1 1/4'' pvc and has a bolt made from 1'' pvc
The bolt fits into the breech almost perfectally, and was air tight with a wrap of tape. t The front and back of the breech have 1'' couplers for the barrel and a gun to attach to.

The extra air tank hold air, until a ball valve is opened, then the air goes into the gun. With this size tank, and my bouncy ball gun, i can get 6 shots before i notice any HUGE difference in muzzle velocity.

One huge improvement could be made, store the extra air in a metal tank, and regulate the pressure going into the gun, for even more shots, and a more regular muzzle velocity over multiple shots.

In the photos/video below, you can see the system on my 1'' bouncy ball pistol... making it more of a huge rifle... lol


Pictures:
Image
Image
Video:
[youtube]http://www.youtube.com/watch?v=KPAWIcrgIOk[/youtube]

What do u think??
  • 0

Last edited by jhalek90 on Sat Sep 19, 2009 3:59 pm, edited 2 times in total.
User avatar
jhalek90
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 498
Joined: Fri Aug 14, 2009 5:37 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat Sep 19, 2009 3:53 pm

Sweet, you should add a magazine for even faster reloading.

Also, are you sure that opening the fill valve for such a short time pressurises your chamber to its full capacity?
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jhalek90 » Sat Sep 19, 2009 3:56 pm

I am trying a magazine, And yes... i have a VERY tiny shot chamber.. lol

and the fill valve is actually pretty fast... i can fill the chamber from empty to 100% full very very quickly.

Thanks.
  • 0

User avatar
jhalek90
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 498
Joined: Fri Aug 14, 2009 5:37 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat Sep 19, 2009 3:58 pm

have you tried leaving the ball valve slightly open and firing using only a brief pressure on the blowgun? It would work for semi-auto fire for a QEV, not sure about sprinkler valves but worth a try ;)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jhalek90 » Sat Sep 19, 2009 4:00 pm

Ill try it right now....
Open ball valve a crack.... and "Tap" the blow gun??
  • 0

User avatar
jhalek90
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 498
Joined: Fri Aug 14, 2009 5:37 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat Sep 19, 2009 4:02 pm

That's what I had in mind. If the sprinkler doesn't reseal, try opening the blowgun a bit further etc. etc.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jhalek90 » Sat Sep 19, 2009 5:39 pm

It dosen't seem to make to much of a difference... but i do notice a very little bit less air is being wasted during refill.

Thanks JSR 8)

(Wooo!!!! pointers from JSR!!!! woooooo!!)
  • 0

User avatar
jhalek90
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 498
Joined: Fri Aug 14, 2009 5:37 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: maverik94 » Sat Sep 19, 2009 6:58 pm

Tis Quite a nice gun, I like multishot guns. For even more shots you could try using a hammer valve. Or for even more shots I would use a smaller bore. High pressure+low volume is better in my opinion that lower pressure and higher volume. Anyway, you've made some interesting guns, the only thing I have to say is that I think full metal guns are better than pvc guns in a few ways.
1) they look better
2) they hold more pressure
3) steel and brass is all threaded, so no worries about epoxy

anyway, I'm looking forward to seeing more of your guns!
  • 0

"You can't be friends with anyone if you aren't friends with yourself."
"I'd rather be hated for who I am, than loved for who I'm not." -André Gide
Give me a lever long enough, and a fulcrum on which to place it and I shall move the world.
–Archimedes
Defeat is always momentary.
–Carl Denham

Current Project: None, I'm in Spudremission.
User avatar
maverik94
Colonel
Colonel
 
Posts: 558
Joined: Wed Jan 21, 2009 4:48 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sun Sep 20, 2009 2:47 am

So it works? Build yourself a Tee magazine and you're sorted ;)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: POLAND_SPUD » Sun Sep 20, 2009 5:27 am

nice... I like modular designs

but to tell you the truth you can achieve interchangeability simply by using threaded metal parts...

all you need is a 3/4" QEV, a ball valve for piloting and a couple of fittings and you've got a gun that can use interchangeable barrels and chamber sizes...
so you can switch from 6mm barrel to 1" barrel or 2" PVC barrel in one minute

if you ever want to build something more advanced you can use that parts to build a semi auto or full auto... and since you can use higher pressures you can build smaller guns

threaded fittings and pipes are LEGO of spudgunning :wink:
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: jhalek90 » Sun Sep 20, 2009 3:37 pm

jackssmirkingrevenge wrote:So it works? Build yourself a Tee magazine and you're sorted ;)


Tee msgszine tend to not like bouncy balls. They stick to much.... and it jams almost evey shot....

I have to use shells. :-)
  • 0

User avatar
jhalek90
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 498
Joined: Fri Aug 14, 2009 5:37 pm
Reputation: 0

Unread postAuthor: Sticky_Tape » Sun Sep 20, 2009 4:03 pm

jhalek90 wrote:
jackssmirkingrevenge wrote:So it works? Build yourself a Tee magazine and you're sorted ;)


Tee msgszine tend to not like bouncy balls. They stick to much.... and it jams almost evey shot....

I have to use shells. :-)

Or maybe you could lube it :P make things simpler.
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: jhalek90 » Sun Sep 20, 2009 4:45 pm

Lube my balls???? dose not sound like fun to me.
No one likes slippery balls.
Oh for the love of God.... get your minds out of the gutter. :x
  • 0

User avatar
jhalek90
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 498
Joined: Fri Aug 14, 2009 5:37 pm
Reputation: 0

Unread postAuthor: Willdebeers » Sun Sep 20, 2009 4:55 pm

jhalek90 wrote:No one likes slippery balls.
*cough* what?
  • 0

Image
User avatar
Willdebeers
2nd Lieutenant
2nd Lieutenant
 
Posts: 214
Joined: Tue Feb 03, 2009 1:18 pm
Reputation: 0

Unread postAuthor: Hotwired » Sun Sep 20, 2009 6:05 pm

Will likes a bit of baby oil on his. Improves performance.


Repeater looks like its working well :wink:
  • 0

User avatar
Hotwired
Lieutenant General
Lieutenant General
 
Posts: 2599
Joined: Fri Oct 13, 2006 5:51 am
Location: UK
Reputation: 0

Next

Return to General Spud Cannon Related

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'